CONDENSED CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - 3 months ended Dec. 31, 2015 - USD ($) $ in Thousands	Total	COMMON STOCK [Member]	CAPITAL INEXCESS OFPAR VALUE [Member]	RETAINED EARNINGS [Member]	TREASURY SHARES [Member]	ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) [Member]	DEFERRED COMPENSATION [Member]	Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period								3 years
Stock Repurchased During Period, Shares	432,419
Balance at Sep. 30, 2015	$ 430,525	$ 19,770	$ 518,485	$ 454,548	$ (436,559)	$ (91,188)	$ (34,531)
Balance (in Shares) at Sep. 30, 2015		79,080,000			30,737,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,596			8,596
Dividend	(2,281)			(2,281)
Tax effect from exercise/vesting of equity awards, net	2,291		2,291
Amortization of deferred compensation	688						688
Common stock issued (shares)		14,000
Common stock issued	0	$ 3	(3)
Common stock acquired	(10,910)				$ (10,910)
Common stock acquired (in Shares)					619,000
Common stock issued for equity awards, net	0	$ 86	(86)
Stock grants and equity awards, net (in Shares)		346,000
ESOP allocation of common stock	382		382
Stock-based compensation	3,066		3,066
Other comprehensive loss, net of tax	(3,978)					(3,978)
Balance at Dec. 31, 2015	$ 428,379	$ 19,859	$ 524,135	$ 460,863	$ (447,469)	$ (95,166)	$ (33,843)
Balance (in Shares) at Dec. 31, 2015		79,440,000			31,356,000